/* Check to see if we have a working DOM!  (Navigator 6.x, IE 5.x)
 * If we do, we will want to make use of it.
 */
window.have_dom = false;
if (parseInt(navigator.appVersion) >= 5 ||
    (navigator.appVersion.indexOf("MSIE 5") != -1)  ||
    (navigator.appVersion.indexOf("MSIE 7") != -1)  ||
    (navigator.appVersion.indexOf("MSIE 6") != -1) ) window.have_dom = true;

/* These are utility functions that I have found scattered (and repeated)
 * throughout the site.  I have placed them here so I can maintain them
 * better.
 */

function MM_swapImgRestore() { //v3.0
    var i,x,a = document.MM_sr;
    for (i = 0; a && (i < a.length) && (x = a[i]) && x.oSrc; i++)
	x.src = x.oSrc;
}

function MM_preloadImages() { //v3.0
    var d = document;
    if (d.images) {
	if (!d.MM_p)
	    d.MM_p = new Array();
	var i, j = d.MM_p.length, a = MM_preloadImages.arguments;
	for (i = 0; i < a.length; i++)
	    if (a[i].indexOf("#") != 0) {
		d.MM_p[j]       = new Image;
		d.MM_p[j++].src = a[i];
	    }
    }
}

function MM_findObj(n, d) { //v3.0
    var p, i, x;

    if (!d)
	d = document;

    if ((p = n.indexOf("?")) > 0 && parent.frames.length) {
	d = parent.frames[n.substring(p+1)].document;
	n = n.substring(0, p);
    }
    if (!(x = d[n]) && d.all)
	x = d.all[n];
    for (i = 0; !x && i < d.forms.length; i++)
	x = d.forms[i][n];
    if (d.layers) {
        for (i = 0; !x && i < d.layers.length; i++)
   	    x = MM_findObj(n, d.layers[i].document);
    }
    if (!x && document.getElementById)
	x = document.getElementById(n);

    return x;
}

function MM_swapImage() { //v3.0
    var i, j = 0, x, a = MM_swapImage.arguments;

    document.MM_sr = new Array;
    for (i = 0; i < (a.length - 2); i += 3)
	if ((x = MM_findObj(a[i])) != null) {
	    document.MM_sr[j++] = x;
	    if (!x.oSrc)
		x.oSrc = x.src;
	    x.src = a[i+2];
	}
}